The gyrotron backward-wave oscillator (gyro-BWO) is known as a source of frequency-tunable high-power coherent radiation, which is attractive for a number of applications. This was the motivation to develop a CW tunable gyro-BWO with a power of several kilowatts at the frequency of about 24 GHz. The gyro-BWO exploits a DC oil-cooled magnet with magnetic field up to 0.5 T and utilizes a weakly-relativistic (20 keV) electron beam produced by a magnetron injection gun. A stable generation at the second cyclotron harmonic with a maximum power of 7 kW and interaction efficiency of 15% at the frequency of 24.7 GHz was achieved. Smooth oscillation frequency tuning by varying the magnetic field was measured to be as wide as 5% at half-power level. The use of a depressed collector provided an efficiency increase up to 23% and an opportunity for a reduction of the main power supply voltage down to 10 kV.


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    Titel :

    Frequency-tunable CW gyro-BWO with a helically rippled operating waveguide


    Beteiligte:
    Denisov, G.G. (Autor:in) / Samsonov, S.V. (Autor:in) / Bratman, V.L. (Autor:in) / Bogdashov, A.A. (Autor:in) / Glyavin, M.Yu. (Autor:in) / Luchinin, A.G. (Autor:in) / Lygin, V.K. (Autor:in) / Thumm, M. (Autor:in)


    Erscheinungsdatum :

    2004-01-01


    Format / Umfang :

    146318 byte




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



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